Q:

Select the odd group of numbers. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.13 – Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

• 1
  (405 –400 –395 )
• 2
  (700 –690 –685 )
• 3
  (550 –545 –540 )
• 4
  (620 – 615 –610 )